Metals Classification

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What is a common characteristic of metals?

Being transparent

Having high thermal and electrical conductivities (correct)

Forming negative ions

Being weak and brittle

What are the two main categories of metals?

Metallic and Non-metallic

Ferrous and Non-ferrous (correct)

Ferrous and Non-organic

Alkaline and Acidic

What is a common property of metals, in terms of light?

They are opaque (correct)

They are transparent

They are reflective

They are translucent

What type of ions do metals form?

Positive ions Signup and view all the answers

What do non-ferrous metals lack in their composition?

Iron Signup and view all the answers

Why are non-ferrous metals often preferred over ferrous metals?

Because they are more resistant to corrosion Signup and view all the answers

Which of the following is NOT an example of a non-ferrous metal?

Iron Signup and view all the answers

What property do non-ferrous metals typically lack?

Magnetism Signup and view all the answers

Which non-ferrous metal is often used in electrical wiring?

Copper Signup and view all the answers

What is the ability of a material to resist penetration and wear by another material?

Side Hardness Resistance Signup and view all the answers

What happens to toughness as hardness of a metal increases?

It decreases Signup and view all the answers

What is the result of combining hardness and toughness in a material?

It becomes more resistant to heavy pounding Signup and view all the answers

What is directly related to the machinability of a metal?

Its hardness Signup and view all the answers

What is a key feature of metals in terms of their physical properties?

They can regain their shape after being deformed Signup and view all the answers

What two properties are required to withstand heavy pounding?

Hardness and toughness Signup and view all the answers

What is malleability a measure of in a metal?

Its capacity to be rolled or hammered into thin sheets Signup and view all the answers

What is an important property of metals in terms of their ability to transfer energy?

Conductivity Signup and view all the answers

What is the key difference between malleability and ductility?

Malleability refers to the ability to be rolled into thin sheets, while ductility refers to the ability to be drawn into thin wires Signup and view all the answers

What happens to a metal when it is deformed?

It regains its original shape Signup and view all the answers

What is a characteristic of metals in terms of their response to stress?

They can regain their shape Signup and view all the answers

What happens to a metal when it is subjected to permanent deformation?

It undergoes a permanent change in shape Signup and view all the answers

What two physical properties are often associated with metals?

Elasticity and conductivity Signup and view all the answers

What is the result of a metal being ductile?

It can be drawn into thin wires Signup and view all the answers

What is a common application of malleable metals?

Jewelry making Signup and view all the answers